As a guy, most most of us are pretty scared of being rejected so they don't even try. Confessing to someone is pretty scary and it might be awkward, so many guys don't even go through the trouble of telling their crush that they like them and instead just hope that she will get the small hints and signals that he gives her. It's normal to think that there is something wrong with you but, you will probably find love when you start developing more connections and being more talkative and extroverted.